Hydrochloric Acid → HCID 178513824, 화합물

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Under the nitrogen atmosphere, 20.0 g of 5-hydroxy-1H-imidazole-4-carboxamide hydrochloric acid salt dihydrate prepared according to the method of Reference Example 2 was added to 240 mL of 0.45 mol/L hydrochloric acid and dissolved therein by heating to 50° C. At 50° C., 40 mL aqueous solution containing 14.3 g of sodium formate was added dropwise thereto over 33 minutes. The reaction mixture was cooled. The crystal was collected by filtration and then washed with a mixture liquid containing 20 mL of acetone and 40 mL of water followed by 60 mL of acetone to give 12.8 g of 5-hydroxy-1H-imidazole-4-carboxamide.3/4 hydrate as a pale yellow crystal. The infrared absorption spectrum (ATR method) corresponds to that of Example 4.

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